Hi,
We do have a known issue with one monitor being disabled after a Live Mesh Remote Desktop session, as you describe. For your other issue, would you mind filing a bug report?
Bug submit process:
Please go to http://connect.microsoft.com/. Sign in and then select Live Mesh Tech Preview on Your Dashboard. Click Feedback and follow the instructions for collecting your logs and then submit a bug.
To get your logs:
1. Click Start.
2. Select All Programs and look for the Live Mesh folder.
3. Click Collect Live Mesh Logs.
4. Your logs will be bundled together in a cab file now located on your desktop.
Attach your LiveMeshLogs.cab file located on your desktop to your bug.
Note: you will have to submit a bug first, then edit it to attach your logs.
Thanks,
Ben.